Method of cooling soap.



110.996,551. PATBNTED A11-(1.191909. 1'. JRGENS.

METHOD OF COOLING SOAP. APPLIOATION FILED 11119.19, 1905.

` INvENTQR, W\TNESSES FREDEmc-JURGENS.,

` all crystallization through j to turn on FREDERIC JRGENS, OF SANGERHAUSEN, GERMANY.V

lmTHOD OF C pecication of Letters Patent. Application mea August 19, 1905. serial No. 274,823.

ooLING son?.

Patented Aug. 18, 1908.

' method of cooling soap, whereby the cooling and the concentration of the hot soap solution is accelerated and solid soap is separated in a smooth and amorphous condition, while and the thereby-produced granulation, and the mottled, grained or cloudy appearance (known as curling) of the soap, is avoided.

The improvement in the method consists of subjecting the hot soap solution during the rocess of cooling to the action of a vacuum. n order that also the lower layers of solution, which are subjected to the pressure of the head of the liquid, may be exposed to theaction of the/vacuum, the cooled surfaces of the cooler are constantly swept with Scrapers or the like for the purpose of not only scraping oli any crust of soa which may form from the surfaces, but a so of continuously producing spaces, in vwhich the vacuum can o erate direct upon all the various la ersl of t e lifljuid, before the said spaces are led up with iquid soap. For carrying out the improved method an a paratus may be used, t e construction of W 'ch is orinstance illustrated in the accomapanying drawing, in which Figure 1 is a view of a complete'a paratus, inclu ding vertical section through the cooler, and Fig. 2 is a horizontal section through the cooler on the line -at of Fig. 1.

Similar letters of reference refer parts in both views. Y The cooler consists of a cylindrical jacketed vessel, D, with a conical bottom b, and a central cooling tube E, a cover and an agitator of the followi construction. The central cooling tube E 1s supported on the bottom b. by means of severa egs and is in its upper part reduced in diameter. A sleeve passln a stuffing box of the cover is mounte the upper reduced part of the tube E. It is shown as made in one piece'with a erforated disk, `from which Iare suspended our external scrapers G and two internal scrapersG. The four external Scrapers G, are ada tedto scra e the inside of the interto similar nal wal B, while t e internalscrapers, QQ,

Hserve for scraping the outside of the cooling tube E. All six scrape'rs are connected with each other and st'fened by means cfa helically'bent plate F and a cross piece, which latter is mounted to turn on the oWer end of the reduced part or' the cooling tube E. At the top end of the sleeve is fastened a large bevel wheel yS, in from a pulleyQ, to rotate the inside Scrapers and the screw in one direction, While the outside scrapers are driven in the opposite direction by engagement of pinion with bevel wheel R. The cover is providedwith an inlet A, for the introduction of the hot soap solution from a tank Z, and with an opening, H, connected by a ipe V or the like with an air pump U.. The' ottom b of the cooler is normally closed with a slide K and is rovided with an outlet L. A long tube an a short tube are arranged within the reduced upper part of the cooling tube. E, the long tube reaching downto/a point above thev bottom of the cooling tube E and serving for introduction of cold water, while the short tube serves for the discharge of the warmed water. A supply tube (not shown) is attached to the bottom of the'cooler for the introduction of cold waterinto the jacket C between the two walls B and D, and an outlet tube (not shown) andv serves for the dlscharge of the warmed water from the jacket. .An opening J is rovided for the introduction of compresse vair by means of ipe T intothe apparatus.,- i opening M is s own as provide with a safetyvalve rm. Pump U is'operated by means of pulleysl W and X, connected by belt Y.

The apparatus is operated as follows: The hot soa solution introduced into the cool r t ough the inlet A, after which the latt r is closed. Cold water is. passed through the jacket or space C between the tube E. The agitator G, F, is put into motion by the dri j' g pulley in such manner that the soap solution 1s stirred up and' ed. At the same time, the air pump U is putinto operation for producing a vacuum in )the cooler through the o enin H. Under thevcombined action of t e cooing water and of the vacuum, the hot soap solutionwill be quicklr' cooled and concentrated. The Scrapers G', constantly sweep the inside of the Wall B and the outside Asolid soap'w 'ch may form, and mix it with mesh with a pinion P, driven `two Walls B and D,land throu h the cooling is attached to the upper part'of the vessel D,

lifted, and' thus well I -of the coolinltubeE, scrape off any crust of l the liquid soap. 'Besides this, they constantly produce, during their rotation, spaces through which the vacuum can act upon all the several layers and particles of the solution. When the solution is sufiiciently cooled and has attained the proper consistency, the port H connected with the vacuum-pump is' closed, and the port J is opened, removing the vacuum so that the compressed air entering through this opening causes a sudden solidiiication or con ealin of the soap and forces the same in the esire form through the outlet L, as soon as the slide K is Withdrawn. By reason of the extremely quick solidiying of/the soap, the formation of crystals is prevented, since crystals re uire a considerable time for formation, an cannot be produced in a liquid which suddenly solidifls.

The apparatus can be o erated periodically or continuously. In the latter case the soap mass isintroduced continuously into the apparatus, passes the coolin room` and leaves 1t at once through the out et L. The obtained solid soap ieces can, in the usual manner, be cut oi, nii'ied and 'com vressed.

With theaid of `the vacuum, `t cooling Water or other medium in the new apparatus is utilized to a very high de ee, which is of s ecial imoitance, seeing, t at the cooling uid is digcult'to obtain in suiiicient quanv tities, more particularly in summer. The

hitherto known soap coolers consume enor-Y mous quantities of Water. The rapid cooling effected in the new cooler renders it possible to cool largefquantities of hot soap solution in a short time in simple apparatuses of a moderate size.

The new method secures to the soap maker a considerably greater independence of the temperatures Without, Whlc'h in summer occasion very great difficulties as is Welly known. The vacuum can be produced equally well in summer and in winter andindependently of the cooling medium at hand. At last the new method renders it possible to avoid all the lcrystallizationsl of soap on the latter becoming torpid and also the inconvenient granulations and other irregularities which are so frequently thereby produced in the old methods.

sists in cooling hot soap so ution in a closedff cooled vessel, subjecting the soap solution during cooling to agitation and to the action of a vacuum, and scraping off any crust of soap which may form on the'cooled surfaces.

2. The method of cooling soap, which consists incooling hot soap solution in a closed cooled vessel, subjecting the soap solution during cooling to the action of a vacuum, and' scraping oi any crust of soap which may form on the cooled surfaces.

3. The method of cooling soap, which consists in cooling hot soap solution in a closed vessel having cooled Walls and a cooled internal 'bod ,A subjecting the soap solution lduring coo lng,' to the action of a vacuum,

and scraping oi any crust of soap which may form on the cooled walls or cooled internal body.

4. The method of cooling soap, which consists in cooling hot soap solution in a closed cooled vessel, and subjecting the solution during coolin to the action of a vacuum.

' 5. The met od of coolin soap, which consists in cooling hot soap so ution in a closed cooled vessel While sub'ected to the action of a vacuum and suddenly removing the vacuum.

6. The method of cooling soap, which'consists in a itating hot soap solution in a closed coo ed vessel while subjected to the action of a vacuum and scrapin of any crust of soa which may form on t e cooled surfaces, and suddenly removing the vacuum. In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses, this eighth day of August 1905.

. 1 FREDERIC JRGENS. Witnesses AUGUST GERM,

CARL TJEHmsWrrz. 

